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Finding the Fourth Proportional to 98,472.08, 135,903.16 and 55,452.96

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Solution

The fourth proportional to 98,472.08, 135,903.16 and 55,452.96 is: 76,531.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,472.08 : 135,903.16 = 55,452.96 : x
  2. Step 2: Convert to fraction form
    98,472.08/135,903.16 = 55,452.96/x
  3. Step 3: Cross multiply
    98,472.08x = 135,903.16 × 55,452.96
  4. Step 4: Simplify right side
    98,472.08x = 7,536,232,495.35
  5. Step 5: Solve for x
    x = 7,536,232,495.35/98,472.08
  6. Step 6: Final answer
    x = 76,531.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.